You move to a new city where demand for dog-walking has skyrocketed because dog ownership has exploded. You see that a large number of people have become dog walkers, which is clearly a free entry business. But you also notice that although dog grooming is a free entry business, too, almost no dog groomers have been established. A friend asks you which of the two businesses you would recommend he enter, given that no prior experience or special knowledge or skills are required for either. Given what you have learned in this class, which would you recommend as the better long-run profit opportunity?